Finding the Fourth Proportional to 9,982.76, 14,978.48 and 5,360.36

Step by Step Solution

1. Step 1: Write the proportion equation
   9,982.76 : 14,978.48 = 5,360.36 : x
2. Step 2: Convert to fraction form
   9,982.76/14,978.48 = 5,360.36/x
3. Step 3: Cross multiply
   9,982.76x = 14,978.48 × 5,360.36
4. Step 4: Simplify right side
   9,982.76x = 80,290,045.05
5. Step 5: Solve for x
   x = 80,290,045.05/9,982.76
6. Step 6: Final answer
   x = 8,042.87